i tend to repeat the last 3 or 4 words in a phrase when i say a phrase or speech i rehearsed in my ming beforehand, for example, i would say: "Jewelery making is something i like to do, like to do..." I find it more embarassing than troublesome, because i tend to repeat myself before i catch it. I also do it when i get excited, but i stutter when im upset or tired. I didnt know there was a scientific term for it until just now.
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